Southern California -- this just in

Cool temperatures in store for Southern California this week

The royal couple may have taken the heat index with them, with Southern California setting in to the beginning of a cooler-than-normal week.

Or maybe it's just that trough of low pressure hovering near Washington that's keeping temperatures down, said Ryan Kittell, a meteorologist for the National Weather Service in Oxnard.

"It's going to pretty much cool everything down, especially in the coastal areas because the marine layer is pretty deep," he said Monday. "It's more like June than July."

After a month of mid- to high-80-degree temperatures in downtown Los Angeles that led to some sweaty nights for the AC-less, Kittell said the L.A. area should see temperatures in the 70s for most of the week. Thursday and Friday should be the coolest days, with temperatures dipping down to about 73 degrees, he said.

Kittell said Southern California should start to warm up to normal by Sunday, with temperatures creeping above 80 degrees again.

"It'll be warmer, beach weather," he said. "We'll be back where we expect to be this kind of the year."